A door opening device is provided with a latch member (20) rotating in a latch housing installed on one side of a door panel (8), and includes a latch control lever (10) having a hinge part elastically supported on one side of an upper frame or a lower frame of a door, a handle (11) extending from one side of the hinge part, and a yoke (14) formed on the other side of the hinge part, the latch control lever forming a traction force on the yoke when the handle is rotated about the hinge part by an external force; a rotary shaft shaft-engaged with the latch member and having a swing part formed to extend to an outer side of the latch member, the rotary shaft rotating in a body with the latch member so that the latch member is released by the traction force of the latch control lever; and a traction cable (23) having one end fixed to the yoke of the latch control lever and the other end connected to the swing part of the rotary shaft.
